.login {
    width: 500px;
    position: absolute;
    background-color: #fff;
    top: 30%;
    left: 10%;
    text-align: left;
    border-radius: 10px;

    .login-form {
        border-radius: 10px;
        padding: 20px 80px 20px 0;

    }

}

.backg {
    width: 100%;
    height: 100%;
    position: relative;
    background-image: url('../../image/3.jfif');
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size: 100% 100%;
    /*宽高都100%*/
}